This time it's not a cunning move, I appreciate Google for their new plan.
I think mostly downloading site and third-party Ad network will be highly affected. It will force them to stop sneaky advt method which till date has been affected our browsing experience.
I feel bad when I see some search engine take place of Google as default one, it's a privacy risk and cause poor experience. Ultimately, sneaky ad is responsible for these.
Animated Ad banner like 'Your Pc is slow!!', 'Your FLASH player is outdated', On-click multiple pop-ups at once; these are damn horrible things of Internet. Hope we can get rid of these things.